Most domestic sewing machines require
the same system of needle with a flattened shank at the top and a shank with a
groove for the thread to travel to the eye, these are 130/750H. There
are several different categories of needles within this system, they differ in
size, needle point shape, and eye.

J, MIC, SUK, L etc. indicate the type of fabrics (or task) these
needles are intended for.

80/12, 90/14 etc is the diameter of the needle in two different
units, mm (80 =.8mm) and a numbering system recognised in the USA and Asia. Use
these numbers as a guide to the weight of thread and fabric they are suitable
to use with.

Your choice of needle is critical to the success of your project, the size and
shape of the point depends on the fabric you are sewing. There is a leaflet
that is very useful to help you choose. Click Here